sampson



(No Model.) 2 Sheets-Sheet 1.

0. H. SAMPSON & P. J. WRIGHT.

MACHINE POE DRESSING VALVES.

No. 435,904. Patented Sept. 2, 1890.

Q7; ZZW wwg d (No Model.) 2 Sheets-Sheet 2.

G. H. SAMPSON & P. J. WRIGHT. MACHINE FOR DRESSING VALVES.

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c of the valve.

UNITED STATES PATENT OFFICE.

CHARLES H. SAMPSON AND PLINY J. \VRIGHT, OF MINNEAPOLIS, MINNE- SOTA;SAID SAMPSON ASSIGNOR TO CLARA E. SAMPSON, OF SAME PLACE.

MACHINE FOR DRESSING VALVES.

SPECIFICATION forming part of Letters Patent No. 435,904, datedSeptember 2, 1890.

Application filed January 23, 1890.

To all whom it may concern.-

Be it known that we, CHARLES H. SAMPSON and PLINY J. \VRIGHT, citizensof the United States, residing at Minneapolis, in the county 5 ofHennepin and State of Minnesota, have invented certain new and usefulImprovements in Machines for Dressing Valves; and we do hereby declarethe following to be a full, clear, and exact description of theinvention, such I as will enable others skilled in the art to which itappertains to make and use the same.

Our invention relates to a machine for dressing or surfacingglobe-valves. As is well known, the face of a globe-valve, and also itsI seat, are worn by constant use and cut by the action of matter passingthrough the valvechamber, and therefore become untrue and leak.

The object of our invention is to provide a machine for resurfacingvalves, so that they will accurately fit their seats; and with this endin view we provide a vertical standard having a projecting tubularbearing. WVithin this bearing is a shaft or spindle having a head at itsforward end and a reduced threaded portion upon its other end adapted toreceive a crank or other suitable actuating device, which is securedthereon by a nut.

Globe-valves are usually provided with a conical face and with a tubularinternallythreaded socket for receiving the glands or nuts for securingthem on the valve-stems. When a valve is worn and needs resurfacing, itis removed from its seat and, together with its securing-gland, takenoff from the stem. We then slip the gland over the shaft or spindle,place the valve on the end of the same, and secure it in positionthereon by screwing the gland within the threaded socket As valves areof different sizes, it becomes necessary to provide means for holdingthe glands of different bore upon the same shaft or spindle, and inorder to do this we provide a series of interchangeable bushings, all ofthe same bore, but of diiferent sizes, any one of which can be slippedon the shaft or spindle. In this manner we are enabled to secure anysize of valve upon the same spindle. In each side of the standard are aseries of threaded openings. A threaded bolt having a thumb-nut at oneend Serial No. 337,907. (No model.)

is adapted to be inserted in any one of the openings on one side, andwhen thus inserted can be adjusted back and forth at will.

Loosely mounted on a smooth portion of this bolt is a short tube orsleeve having a threaded extension. At its inner end theboltis threadedto receive a nut for securing the short tube in position. This tube isin the form of a T- coupling, and its threaded extension is adapted tobe inserted in a correspondingly-threaded socket in the end of a leverhaving a broad surface to receive a file or other attrition-surface anda hand-grasp extension. Mounted in one of the series of holes in theopposite side of the standard is a screw-bolt having a perforated head,and in the perforation of said head is another bolt with a conical end,which bears in a seat on the under surface of the file-carrying lever.

In virtue of the construction set forth it will be seen that thefile-holding lever has a movement in every necessary direction topresent the file at the proper angle to the valve, and that it can beplaced at different vertical positions to accommodate the size of thevalve.

In the accompanying drawings, in which like numerals are placed on likeparts throughout the several views, Figure 1 is a plan view of themachine. Fig. 2 is a side elevation. Fig. 3 is a plan view of the file,and Fig. 4 an end view thereof. Fig. 5 is ,a side elevation of thespindle, showing the valve and valvegland in section on the end thereof.Fig. 6 is a partial longitudinal section of the fileholding lever,showing the manner in which it is connected with the T-coupling. Fig. 7is a fragmentary section of the standard and adjusting-bolts. Fig. 8 isa vertical section of a number of interchangeable bushings, each ofwhich is of the same bore, but is of a size diiferent from each of theothers.

1 is a standard mounted in any desirable manner on a base or othersuitable support 2. 5 3 is a laterally-projecting tubular bearing inwhich is removably seated a shaft or spindle 4, provided with a head 5at one end and with a reduced screw-threaded portion 6 at the other,said reduced portion being adapted to receive a crank 7, held in placeby a nut 9.

10 is a globe-valve, of the usual pattern,

and is secured in place by a nut 14 shown as secured on the end of thespindle by its nut or gland 11.

12 12 are a series of interchangeable bushings, each having the samebore, and that are adapted to fit the chuck-spindle, but differing insize one from the other. Any one of these bushings can be slipped onthespindle and against the head thereof. In this way we are enabled tosecure any size of valve and securing-gland upon the same spindle.

13 13 are a series of threaded openings in line with each other at oneside of standard 1, and 14 is a screw-bolt having a milled head, whichcan be inserted in any one of said openings. At its opposite end thisbolt 14. is reduced in diameter and has a smooth portion 14 and athreaded portion 14 15 is a short tube having a threaded extension 15,which enters a threaded socket 16 in a file-holding lever 17. Thethreaded extension of tube 15 is first inserted in the socket 16, andthe tube is then slipped upon the smooth reduced portion 14' of thebolt, The file-holding lever 17 is formed with a broad bearing-surface1'7, having side flanges 1'7 between which the file 18 is clamped bysetscrews 19. This lever is extended to form a hand-grasp 17 @020 areaseries of threaded openings in standard 1 onthe side opposite that inwhich openings 13 are located, and 21 is a screwbolt having a head 22,with a threaded opening, in which a bolt 23, with a milled head 24:, isinserted. This bolt can be inserted in any one of the openings 20, andis adjustable back and forth therein. Bolt 23 has a conical end, whichfits in a correspendin g concave seat 24 on the under side of lever 17.

The operation of the machine is evident, but will be briefly stated asfollows: The valve to be resurfaced is removed from the fitting and abushing of the desired diameter is placed within the valve-securinggland, and the gland is slipped on the spindle against the head 5thereof. The valve is then placed against the head of the spindle andthe gland is turned to cause its externally-threaded portion to enterthe interiorly-threaded socket in the valve and force the valve againstthe head of the spindle. After this is accomplished the spindle isslipped within the tubular bearing 3 and the crank 7 is applied. Bolt 14is then placed in the proper opening 13, and the tube 15, to which thefile-carrying lever is attached, is applied thereto, and the socket onthe under side of said lever is then placed over the conical end of bolt23, bolt 21 having been placed in the proper opening 20.

It will be seen that the file-carrying device can be adjusted back andforth and can be set at various angles to the valve on the end of thespindle. By grasping the hand-extem sion of the said file-carryingdevice it can be turned to the desired angle and be made to force thefile against the frusto-conical face of the valve. The crank is thenturned and the face of the valve will be revolved against the surface ofthe file While we have shown the invention as designed for resurfacingor dressing worn valves,

it is obvious that it could be employed for Having thus described ourinvention, whatwe claim is- 1. The combination, with a revoluble spindlefor holding a valve, of an attrition-surface, against which the valve isrotated, a pivoted lever for supporting said surface, and a screw foradjusting said lever, substantially as and for the purpose specified.

2. The combination, with a revoluble spindie for supporting a valve, ofa fiat attritionsurface, a pivoted'lever havinga seat for said surface,and means for adjusting the lever, substantially as and for the purposespecified.

3. The revoluble spindle adapted to hold a valve to be dressed, jointlywith the interchangeable bushings, each of the same bore, but differingin size, substantialiy as and for the purpose specified.

4. The combination, with a standard having an extended tubular bearing,and a revoluble valve-holding spindle mounted insaid bearing, of ascrew-bolt, a sleeve mounted'on said bolt, a lever secured to saidsleeve, and an attrition-surface carried by said lever, substantially asand for the purpose specified.

5. A standard provided with a series of threaded openings, incombination with a bolt adapted to be inserted in any one of saidopenings, a sleeve mounted on said bolt and having a threaded extension,and a leverprovided with an attrition-surface mounted on said extension,substantially as andfor the purpose specified.

6. The standard provided with a series of threaded openings in each ofits sides, in combination with a file-carrying device pivoted on a boltinserted in one of ings, a bolt with a perforated head inserted in oneof the openings on the side opposite to the first-named bolt, and anadjustingscrew mounted in the said perforated head, substantially as andfor the purpose specified.

7. The combination, with a revolublespindle, of a pivoted lever having aflat surface provided with side lugs or flanges, a file mounted betweensaid lugs or flanges, and means for supporting and adjusting said lever,substantially as set forth.

In testimony whereof we affix our signatures in presence of twowitnesses.

CHARLES H. SAMPSON PLINY J. WRIGHT.

\Vitnesses:

7M. H. BLODGE TT, A. H. OPSAHL.

said open-

